sapancae, Alburnus (Chalcalburnus) chalcoides Battalgil [F.] 1941:179 [Revue de la Faculté des Sciences de l'Université d'Instanbul, Série B: Sciences Naturelles v. 6 (nos 1-2); ref. 13194] Lake Sapanca, western Anatolia, Turkey. Syntypes: whereabouts unknown. •Synonym of Chalcalburnus chalcoides (Güldenstädt 1772) -- (Kottelat 1997:53 [ref. 22952]). •Synonym of Alburnus chalcoides (Güldenstädt 1772) -- (Bogutskaya 1997:165 [ref. 23566]). •Synonym of Alburnus istanbulensis Battalgil 1941 -- (Özuluğ & Freyhof 2007:242 [ref. 29341], Jouladeh-Roudbar et al. 2020:126 [ref. 37983], Çiçek et al. 2024:218 [ref. 40789]). Current status: Synonym of Alburnus istanbulensis Battalgil 1941. Leuciscidae: Leuciscinae. Habitat: freshwater, brackish.